155022572551 has 16 divisors (see below), whose sum is σ = 193477794048. Its totient is φ = 120669998400.

The previous prime is 155022572477. The next prime is 155022572581. The reversal of 155022572551 is 155275220551.

It is a happy number.

It is not a de Polignac number, because 155022572551 - 2¹⁵ = 155022539783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155022572581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 982905 + ... + 1129666.

It is an arithmetic number, because the mean of its divisors is an integer number (12092362128).

Almost surely, 2^155022572551 is an apocalyptic number.

155022572551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

155022572551 is a deficient number, since it is larger than the sum of its proper divisors (38455221497).

155022572551 is a wasteful number, since it uses less digits than its factorization.

155022572551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113542.

The product of its (nonzero) digits is 175000, while the sum is 40.

The spelling of 155022572551 in words is "one hundred fifty-five billion, twenty-two million, five hundred seventy-two thousand, five hundred fifty-one".